LES Very handy! Can one create their own cursors and have Tk use them? How? - RS: In principle, yes - see https://www.tcl-lang.org/man/tcl8.4/TkLib/GetCursor.htm (you don't need C coding, just go to the place where @... patterns are described), but it's not platform-independent - on Unix/Linux you can give an XBM file with foreground and optional background color; on Windows you can give .ani or .cur files...

LB But XBM doesn't do colors - those are bitmaps. XPM is the format that permits colors. I don't recall whether one can define color cursors or not within Tk. - RS: man Tk_AllocCursorFromObj says: "

@sourceName maskName fgColor bgColor

In this form, sourceName and maskName are the names of files describing cursors for the cursor's source bits and mask. - i.e., paint the binary "1" pixels in the specified colors.

I had entirely forgotten that three years ago we had a choice of cursor viewers at cursors ... but the novelty of this page seems to be that columns are alphabetic, at least.